For the Sesame Tuna:

• sashimi-grade tuna, 1 block
• 1 part light soy sauce, 1 part apple vinegar, enough to cover a shallow dish the size of the tuna
• dash of sesame oil
• freshly ground salt and pepper
• sesame seeds to coat

For the Lime Mash:

• 3 floury potatoes
• zest of one lime
• freshly ground salt and pepper
• olive oil

For the roasted garlic dressing:

• 2 cloves of garlic, skin on
• 2 knobs of ginger (about the same amount as the garlic)
• red chillies, to taste
• freshly ground salt and pepper
• dash of sesame oil
• dash of apple vinegar
• 150ml each groundnut oil and olive oil
• juice of one lime